Engine Electronics (ME-SFI) Fuel Injection and Ignition System Function Diagram
Engine Electronics (ME-SFI) Fuel Injection And Ignition System Function Diagram
Engine 111.974 (USA)
12 Intake manifold
40 Diaphragm pressure regulator
55 Fuel filter
74 Fuel cooler
75 Fuel tank
77 Activated charcoal filter
89 EGR valve
126 Secondary air injection shutoff valve (combination valve: check valve integrated)
128 Check valve (vacuum)
156 Exhaust manifold
158 Catalytic converter
a Other consumers
A1 Instrument cluster
A1e26 CHECK ENGINE indicator lamp
A16/1 Knock sensor
B2/5 Hot film mass air flow sensor (intake air temperature sensor integrated)
B4/4 Purge control monitoring pressure sensor up to 8/97
B6/1 Camshaft Hall sensor
B11/4 Coolant temperature sensor
B28 Pressure sensor
B37 Pedal value sensor
G3/1 O2 sensor downstream of TWC
G3/2 O2 sensor upstream of TWC (in exhaust pipe)
K27 Fuel pump relay
K40/4k3 Secondary air injection relay (integrated in fuse and relay module)
L5 Crankshaft position sensor
L6/1 Left front rpm sensor
L6/3 Left rear rpm sensor
M3 Fuel pump
M16/6 Throttle valve actuator
M33 Electric air pump
N3/10 ME-SFI control module
N15/3 ETC (electronic transmission control) control module
N22 Automatic air conditioning (Auto A/C) pushbutton control module
N47-2 ETS/SPS control module
N47-7 ABS control module
N54/1 Infrared drive authorization system control module
N54 RCL (remote central locking) control module
S16/10 Gear recognition switch
S40 Cruise control switch
V Decelerate/Set
B Accelerate/Set
SP Resume
A Off
S43 Oil level switch
T1/1 Twin spark ignition coil 1, cylinders 1 and 4
T1/2 Twin spark ignition coil 2, cylinders 2 and 3
X11/4 Data link connector, 38-pin
X11/22 Data link connector OBD II
Y27 EGR switchover valve
Y32 Air pump switchover valve
Y49 Adjustable camshaft timing solenoid
Y58/1 Purge control valve
Y62 Fuel injectors
CAN Data bus (Controller Area Network)
Note: Model 129 as of 9/97 with leak test for purge control system (purge control system operational check discontinued)